According to the United States Postal Service, 6 million people will have visited a post office to mail holiday cards, letters and packages for Christmas, even though Monday is not the deadline for regular mail to arrive on time for the holiday.

"I think people have gone shopping over the weekend, postal service manager LuAnn Warner said. "And they want to get it in the mail and off their hands and have peace of mind that they're done with their mailing."

Customers can speed things up by using self-service kiosks or even online services from home and having postal carriers pick up packages free of charge.

Either way, customers are advised to get their things in the mail this week; Friday is the last regular mail day before needing to shell out extra cash for priority shipping if packages are to arrive by Christmas.

MORE: Giant Sand Tree Lights Up West Palm Beach:

TO GET FULL-TIME WORK, IT'S UP TO $18,500 A YEAR. THE CITY OF WEST PALM BEACH, WITH THE LIGHTS TURNED ON FOR SANDY. 3, 2, 1! I GOT TO HELP THE MAYOR WITH THE COUNTDOWN TONIGHT WITH THOUSANDS PACKING THE WATERFRONT WITH THE LIGHT SHOW ON EVERY NIGHT EVERY 30 MINUTES FROM 7:30 TO 9:30 AND SANDY IS

RIGHT NOW... MILLIONS OF LETTERS AND PACKAGES ARE BEING PROCESSED, TRANSPORTED AND DELIVERED ON THIS.. THE BUSIEST SHIPPING DAY OF THE YEAR.TERRI PARKER IS AT THE POST OFFICE IN PALM BEACH GARDENS WITH SOME SHIPPING DEADLINES YOU NEED TO KNOW ABOUT. 3 you'll never see your post office as busy as it is today! Even though you still have until Friday to mail pkgs via regular mail and mAkd Christmas delivery - this Monday is traditionally the busiest day of the year as people hustle to get those cards and gifts in the mail 3 Take a look at the lines of the Summit Boulevard post office now take a look at some of the faces of people who didn't realize there was a line 12:23 A zoo! let me tell you there are lines galore It's December 16 a day so busy regular mail seems like it's taking a backseat 3:01 that means is the busiest mailing day of the season this year it's a very busy for us this day we're going to ship 420 million packages between Thanksgiving and Christmas luAnn Warner post office And 6 million people will visit post offices this day alone 15:46 you know I didn't realize that Terri: yet here you are in the middle of it yeah Terri but did you realize today was the busiest day ? no. Am I On TV? Wow ! talk about a day of surprises! some people however, were prepared - even bringing their own chair. and some people just think this is a festive place to be, the heck with the lines 15:33 I Love this post office no problem there Meantime over at UPs it's is not nearly as crowded no lines at all and if you want to speed things up at the post office you can have your mail carrier pick up your pkgs by ordering online . or you can jump the lines by using the self service centers 19:37 Terri: tell me what your strategy is - you're already to go I punched out for lunch and I'm here to mail my packages 3 even the post office workers were mailing pjs today ..but there is an easy way to avoid the lines and ship your pkgs for free...esp if you haven't even bought your presents yet...I'll tell you how at six !